P0038 OBD II Trouble Code HO2S Heater Control Circuit High (Bank 1 Sensor 2)
Detailed information on troubleshooting and repairing a P0038 DTC code which refers to the HO2S Heater Control Circuit. Also includes links to relevant forum topics on the code.
Symptoms of P0038 OBD II Trouble Code
- MIL (Malfunction indicator lamp) illumination
Common Causes of P0038 OBD II Trouble Code
- Faulty Bank 1,2 HO2S (Heated Oxygen sensor)
- Open in the heater control circuit (12 volt PCM controlled systems)
- Short to B+ (battery voltage) in the heater control circuit (12 volt PCM controlled systems)
- Open ground circuit (12 volt PCM controlled systems)
- Short to ground on heater control circuit (On PCM ground controlled systems)